Theatre 625 is a British television drama anthology series, produced by the BBC and transmitted on BBC2 from 1964 to 1968. It was one of the first regular programmes in the line-up of the channel, and the title referred to its production and transmission being in the higher-definition 625-line format, which only BBC2 used at the time.

Thomas Nigel Kneale was a Manx screenwriter who wrote professionally for more than 50 years, was a winner of the Somerset Maugham Award, and was twice nominated for the BAFTA Award for Best British Screenplay.